Sand-handling appliance.



w. H. HO'FMANN.

SAND HANDLING APPLIANCE. APPLICATION FILED JULY 26. I9I5.

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MN, NI @l ...9M QN W. H. HOFMANN.

SAND HANDLING APPLIANCE.

APPLICATION HLEDJULY 26. |915.

Patented July 4, 1916.

2 SHEETS-SHEET 2.

QQ/rma@ Svm -, ED sTATEs PATENT onrucn.

WALTER H. noni/mmv, or RIoI-IMOND HILL, NEW YORK, AssrGNoR rTo RIOHEY,

:BROWNE en DONALD, YORK.

INC.; F MASPETH, NEW YORK, .A CORPORATIGN 0F NEW SAND-HANDLING APPLIANCE.

Specification of Letters Patent.

Patented July 4, 1916.

Application led July 26, 1915. Serial No. 41,819. l

taking sand from a sand pile and dumping it on a molding machine or for any similar purpose.

r1`he principal objects of the invention are to provide a construction and arrangement whereby the scoop itself constitutes a combined shovel and conveyor and Will be capable of taking any predetermined load varying according to the necessities; also to provide a construction in'which the shovel or scoop does not require any special machinery to operate it but can be handled by the machinery usually in operation in a molding machine plant.

rlhe invention also involves improvements in details of construction and combinations of parts as Will appear.

Reference is to be had to the accompanying drawings, in vWhich-- Figure 1 is a diagrammatic view of a portion of aemolding machine plant With a preferred embodiment of this invention installed therein; F ig. 2 is a side view of the scoop and device for supporting it showing it in several positions in dotted lines; Fig. 3 is a plan of a portion thereof; Fig. 4 is sectional view on the line ee1 of Fig. 2; and Fig. 5 is a vieu' of a detail of the adjusting mechanism.

The invention is shovvn as applied kto a plant in which a molding` machine A is to be filled with sand from a sand pile B. For the purpose of this invention a pair of members are located in fixed position parallel with each other adjacent to, and in fact extending into the sand pile. These two members constitute a supporting and guiding frame as will appear. Each one is provided preferably on its outer side With an upper and lower track 11 and 12 and also With a rack 13 shown as between the tracks.

Mounted on these tracks are Wheels 14 which are located on a pair of yokes 15. Each of these yokes extends upwardly and is provided with a notch 16 in the top which opens vertically at the top and then extends down- Wardly at an incline toward theY rear, the purpose of which Will appear later. Also mounted on the yoke is a pavvl 17 adapted to engage the teeth of the rack 18. rlhis paivl is pivoted on a'stud 18 on the inside of the yoke 15. It extends through a slot in the yoke and is provided with an operating handle 19 on theoutside of the yoke. These pawls are shown Lon both of the frames and are designed for adjusting purposes. It Will be obvious that the yokes will travel along the tracks and that the paivl Will ratchet Y over the teeth 13 and when pressure is applied the pawls will engage the flat surfaces of the teeth and prevent the yokes moving b ackrvardly, thus holding the parts in positin. i

The shovel or scoop 20 is provided With a pair of trunnions 21 adapted to enter the notches 16 and adapted to rest in the bottoms thereof so thatV the scoop can be turned thereon as a pivot. The scoop is also provided With tivo pairs of studs located at its opposite ends, one pair 22 being located at the rear of the trunnions 21 and the other pair 28 being located at the front of the same. Y

' The device is designed to be manipulated by any ordinary chain or hoist such as is usually in operation'ina molding machine plant. This is of hooks 24 andl 23.

rEhe operation of the deviceY is as folloivs zAssuming that the shovel or scoop is supported bythe chain'hoist by its studs 22 as indicated in full lines at the right in Fig. 1, it can be moved over by the hoist and its trunnions 21 dropped into 'the notches 16. V1t will thenV occupy the dotted lineposition at the'left in F ig. 2. r.The chain being dropped the scoop Will drop down by gravity to the full line position shown in Fig. 2. The hooks 24: are then removed from the studs 22 and attached to the studs 23. NOW if the chainl is pulled up ,from the full line position to the right hand dotted line posiprovided with the usual pair for engaging the studs 22 Vtion in Fig'. 2 it Will be seen that the scoop Will enter the sand pile and ill itself with sand. This hoisting operation is simply continued to draw the scoop up from the frame and pull the trunnions out of the notches 16. It is from this position as indicated at the right in Fig. 2 and at the left in Fig. 1 that the scoop is moved from the simply lowered molding machine. It is on the molding machine until it rests thereon preferably in upright position. Then the hooks 2d are disengage from the studs 23 and applied to the studs 22 and again raised. This tips the scoop over upon its nose and discharges its contents, at the same time freeing the scoop from the sand and permitting of its being moved back to filling position where it is ready to repeat the operation.

It will be seen that when it is desired not to take a full load the yokes can be moved forward only part of the ordinary distance required for a full load and the pawls will hold them there. Thus the quantity of sand conveyed by the device can be regulated in a simple and convenient manner. It will be understood of course that the yoke is moved forward after each filling operation. Ordinarily it is moved over a certain definite number of teeth. It will be seen also that except for the frame and shovel support, no new mechanism has to be added to an ordinary foundry4 plant in order tosecure the advantages of this invention.

It will be understood of course that while I have illustrated and described the invention as used specifically for transferring sand to a molding machine, yet it is capable of other similar uses and I |do not wish to be limited to that particular one. I am aware of the fact that many other modifications can be made in the apparatus without departing from the scope of the invention as expressed in the claims, and therefore I do not wish to be limited to all the details of construction herein shown and described, but

`What I do claim is l. In a device of the character described, the combination of a frame comprising two members located in stationary position, a pair of yokes adapted to be adjusted along said members each having a notch in the top, a sand scoop provided with trunnions adapted to rest in said notches, and means whereby sail scoop can be caused to swing on its trunnions.

2. In a device of the character described, the combination of al stationary frame, a pair o-f yokes mounted thereon and provided with notches therein, a scoop having trunnions adapted to rest in said notches and also provided with two pairs of studs, one pair located at the rear of the trunnions and the sand pile to the Gayle of this patent may be' obtained for ve cents other at the front and adapted to receive a chain hook for hoisting the scoop.

3. In a sand handling appliance, the combination of a frame provided with means longitudinally adjustable thereon for supporting trunnions, a sand scoop having trunnions adapted to rest removably on said means and provided with stu-ds located on opposite sides of the trunnions, and a hoist adapted to be connected with either of said studs for turning the scoop about the trunnions and lifting it therefrom.

elf. In a device of the character described, the combination with a scoop having supporting trunnions, of a hoisting device adapted to lift the scoop from the trunnions, and means whereby said hoisting device can be connected with the scoop at either' side of the Vtrunnions to the exclusion of the other` whereby it will be tilted about the trunnions as it is being raised by the hoisting device.

5; In a sand handling device, the combination with a pair of frames, each having a rack extending therealong, a pair of yokcs movable along said frames each having a pawl for engaging the teeth of the rack to hold the yokes in adjusted positions therealong, a sand scoop having trunnions adapted to be supported by said yokes, and means for depositing the trunnions on the yoles and turning` the scoop on the trunnions.

G. In a molding plant, the combination with a molding machine to be filled, of a frame located in stationary position adja cent to a sand pile, a sand scoop having trunnions, means carried by said frame and adjustable therealong toward and from the sand pile for receiving said trunnions, said scoop being provided with studs located at the front and rear of its trunnions respectively, and a hoisting means adapted to be attached to tho studs in the rear of the trunnions for the purpose of transferring the scooo from the molding machine to the frame and being adapted to be connected with the studs at the front of the trunnions, whereby the scoop will be turned on its trunnions in forward direction for filling purposes when the hoist is lifted while the scoop is on the yokes and can be lifted from the yolres and transferred to the molding machine.

In testimony whereof I have hereunto set my hand.

VALTER II. I-IOFMANN.

each, by addressing the Commissioner et Patents,

Washington, ID. C. 

